Water quality. Determination of polychlorinated naphthalenes (PCN). Method using gas chromatography (GC) and mass spectrometry (MS)

They vary in their levels of service quality and consumer protection

These requirements reflect the application of human factors engineering principles as they apply to the human-machine interface during normal and abnormal plant conditions

increase durability and extend the structure's longevity

The calibration reference materials are not specified in this method

which could damage equipment or contaminate media upstream

It specifies the health and safety requirements at all stages in the life of the equipment

Annex A (informative) Replaced and obsolete processes

As a user of BS EN 50636-2-92

it is important for readers to understand clearly what the metric means

continuity of insulation and temperature index

Class 240 is a thermal class that requires a temperature index of at least 240

This iteration also takes into account the 2015 revisions to ISO 9001 and the impact of the high level structure and its core themes – leadership